Return to G54 after M30?

I've noticed that in 2.5.2 after I run a program (using G55, call to G55 in the program), after the program is done, and I go to the DRO page, or doing anything in MDI, its all in G54, not G55 as it should be . Almost had a crash but I I'm always religious about hovering over pause and turning down the feedrates. Don't recall seeing this in 2.5.1

Is this expected after an M30? I also have a G53 G0 Z0 at the end of the program, but I don;t suspect that as I do that in teh program at every tool change (for now, my ATC build is progressing...)

cradek wrote:

The best place to find out about gcodes is the quickref: www.linuxcnc.org/docs/html/gcode.html

Click on M2,M30

Thanks. It does in fact return to G54. Mach3 does not behave like this (I'm a recent convert....), nor did the Cincinnati Milacron T10 I ran for 5 years. Just something I'll need to get used to....

andypugh wrote:

I think that ending the program with a % rather than M2 / M30 may have fewer side-effects,

However, it it probably good practice to set all of the coordinate/offset/mode codes at the start of a program, just to make sure you are in the environment you expect.

I agree 100%, and I always do exactly that (set offsets, etc...). In my particular case, I was running a part front and back, in G55, and I ran the front, and before running the back, I had to set a tool length (using the top of the part), but it was in G54, so nearly a crash as the tool was measured over an inch too short...

I will add an "Active CS" to my AXIS setup to watch this better....